It will write each individual 3DPolyline into the same directory as the drawing. The drawing names will start with "0" (zero) then "1" etc until (hopefully) all have been wblocked. It doesn't delete the original polylines from the drawing, but that is a possiblity.

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BIGAL
92

BIGAL
92

dlanorh you write good answers it looks to me that your over complicating it by making extra lists, why not just take the ss which is a 3d polyline selection and jump straight to wblock with correct filename.

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dlanorh
67

dlanorh
67

dlanorh you write good answers it looks to me that your over complicating it by making extra lists, why not just take the ss which is a 3d polyline selection and jump straight to wblock with correct filename.